Paying back a HELOC happens in two distinct phases: an interest-only draw period (typically 5 to 10 years) followed by a fully amortized repayment period (10 to 20 years). During the draw period, you only owe interest on whatever you’ve borrowed. Once that window closes, your monthly payment jumps because it now includes both principal and interest, and you can no longer borrow against the line.
How the Draw Period Works
The draw period is the first phase of your HELOC, usually lasting up to 10 years, though some lenders set it at three or five years. During this time, you can borrow from your credit line as needed, and your minimum monthly payment covers only the interest on your outstanding balance.
The math is straightforward. Take your current balance, multiply it by your annual interest rate, and divide by 12. If you’ve drawn $15,000 at an 8% rate, your monthly interest-only payment is $100 ($15,000 × 0.08 ÷ 12). That payment changes as your balance and rate fluctuate, since most HELOCs carry a variable interest rate tied to the prime rate.
You’re not required to pay only interest during the draw period. Making payments toward the principal during this phase reduces what you’ll owe later and can significantly lower the payment shock that hits when the repayment period begins. Any principal you pay down also frees up that amount on your credit line to borrow again if needed.
What Changes During the Repayment Period
Once the draw period ends, you enter the repayment period, which typically lasts 10 to 20 years. At this point, three things happen at once: you lose access to the credit line, your payments shift to include both principal and interest, and those payments are calculated on an amortization schedule identical to a standard mortgage.
This transition is where many borrowers get caught off guard. If you spent 10 years making small interest-only payments on a large balance, your monthly obligation can double or more overnight. For example, if you owe $50,000 at 9% interest with a 20-year repayment term, your payment jumps from roughly $375 (interest only) to around $450 per month (principal and interest). On shorter repayment terms, the increase is steeper. Planning for this shift well before it arrives gives you more options.
Strategies for Paying It Off Faster
The simplest way to reduce what you owe is to start paying principal during the draw period, even though your lender doesn’t require it. Treating your HELOC like a regular loan from the start shrinks your balance before the repayment period kicks in, which means lower required payments and less total interest paid over the life of the loan.
Another approach is to make extra payments or lump-sum payments whenever you have surplus cash, such as a tax refund or bonus. Because HELOCs calculate interest on your daily balance, every dollar of principal you pay down immediately reduces the interest that accrues the next day. This works the same way paying down a credit card does: the sooner the balance drops, the less interest you pay overall.
If your HELOC has a variable rate and you want more predictable payments, some lenders offer a fixed-rate conversion option. This lets you lock a portion of your balance into a fixed interest rate with set monthly payments, while the remaining balance stays on the variable rate. It can make budgeting easier and protect you from rate increases, though the fixed rate is usually slightly higher than the variable rate at the time of conversion.
Refinancing Your HELOC
If your repayment period is approaching and the new payment will strain your budget, refinancing is worth exploring. You have several options. You can refinance the HELOC into a new HELOC, which restarts the draw period and gives you more time. You can refinance it into a home equity loan, which gives you a fixed rate and fixed payments. Or you can do a cash-out refinance on your primary mortgage, rolling the HELOC balance into a single loan at a potentially lower rate.
Each option has trade-offs. A new HELOC delays the problem if you don’t address the underlying balance. A home equity loan locks in your payment but may carry closing costs. A cash-out refinance only makes sense if the new mortgage rate is competitive. In all cases, refinancing depends on having enough equity in your home and a credit profile strong enough to qualify. If your home value has dropped or your financial situation has changed, refinancing may not be available.
Balloon Payments and How to Handle Them
Some HELOC agreements include a balloon payment, a large lump sum due at the end of the loan term. A balloon payment is generally more than twice the loan’s average monthly payment and can represent a significant portion of your remaining balance. These structures are less common with standard HELOCs but do exist, particularly with older or nontraditional loan products.
If your HELOC has a balloon payment, you’ll want to plan well in advance. Refinancing before the due date is the most common solution, but it’s not guaranteed. The Consumer Financial Protection Bureau notes that declining property values or changes in your financial condition can make refinancing difficult when you need it most. Check your loan agreement now to see whether a balloon payment applies, and start building a plan at least a year or two before it comes due.
Watch for Early Payoff Fees
If you plan to pay off your HELOC ahead of schedule and close the account, check whether your lender charges a prepayment or early closure fee. This is sometimes a percentage of your outstanding balance or a flat fee. Lenders that advertise “no closing cost” HELOCs are especially likely to include an early termination clause, since closing early means they can recapture the costs they initially waived.
These fees are typically disclosed in your original loan documents. If you’re considering paying off the balance early, call your lender to confirm whether a penalty applies and how much it would be. In many cases, the fee decreases over time or disappears entirely after the first three to five years. Knowing the exact terms helps you decide whether to pay off the balance now or wait until the penalty period expires.
Building a Payoff Plan
Start by pulling up your HELOC statement and noting four things: your current balance, your interest rate, whether you’re in the draw period or repayment period, and when the next phase begins. If you’re still in the draw period, calculate what your payment will look like once repayment starts using an amortization calculator (available free on most banking sites).
From there, decide on your approach. If the projected repayment amount is comfortable, you can let the transition happen naturally. If it looks tight, start making principal payments now to bring the balance down. If the numbers are genuinely unworkable, explore refinancing options before the deadline arrives, while you still have time and leverage to negotiate terms. The worst position is being surprised by a payment you can’t afford with no time to adjust.